For Grades 6-8, Ages 11-14. Revised and updated edition of the best-selling dictionary written especially for middle school students. Features nearly 70, 000 entries. Includes new words and meanings across a variety of fields including technology, social media, science, health, and popular culture. 23, 000 usage examples and more than 1, 000 carefully drawn illustrations clarify and expand understanding. Abundant word history and synonym pareagraphs. A great study aid for students building vocabulary and engaging with more complext text. New words added include: autocorrect, dystopia, biomass, and Internet of Things.